According to a recently released report from commercial real estate firm CBRE, the San Francisco Bay Area topped national tech market rankings and experienced an estimated 61.5 percent bump in tech talent supply between 2011 and 2015. San Francisco’s “brain gain”, a metric calculated by comparing the number of tech degrees earned and tech jobs added in a region, outpaced Washington, D.C., Seattle, Portland, and 36 other American cities at a time when growth has stalled in most established tech markets.